The features of this product are as follows: 1. Rechargeable design: Rechargeable battery is used, no need to replace the battery frequently, saving cost and convenient to use. It can be charged via USB, which is convenient to charge. 2. Hearing aids for the elderly: specially designed for the elderly to meet their hearing needs, provide effective and comfortable hearing assistance, and improve their hearing experience and quality of life. 3. Sound amplification: Equipped with a high-performance sound amplifier, it can amplify the sound to a level suitable for the hearing needs of the elderly, providing a clear and comfortable listening experience. 4. Earphone design: It adopts earphone design, which is convenient and comfortable to wear, not easy to fall off, and can be better fixed on the ear to reduce external interference. 5. Lightweight and portable: the product is small in size and easy to carry, you can take it with you and use it anytime, anywhere. 6. Multifunctional application: In addition to the hearing aid function, it can also be used as an ordinary earphone, which is convenient for the elderly to listen to music and sounds in their daily life. 7. Noise reduction function: It has the function of reducing environmental noise, effectively reducing interference sounds, and providing a clear listening experience.